<template>
  <el-menu
    default-active="1-4-1"
    class="el-menu-vertical-demo"
    @open="handleOpen"
    @close="handleClose"
    :collapse="isCollapse"
    background-color="#545c64"
      text-color="#fff"
      active-text-color="#ffd04b"
  >
  <h3>{{isCollapse ? "后台" :"通用后台管理系统"}}</h3>
    <el-menu-item  @click="clickMuen(item)" v-for="item in noChildren" :key="item.name" :index="item.name">
      <i :class="`el-icon-${item.icon}`"></i>
      <span slot="title">{{item.label}}</span>  
    </el-menu-item>
    <el-submenu v-for="item in hasChildren" :key="item.label" :index="item.label">
      <template slot="title">
        <i class="`el-icon-${item.icon}`"></i>
        <span slot="title">{{item.label}}</span>
      </template>
      <el-menu-item-group v-for="subItem in item.children" :key="subItem.path">
        <el-menu-item @click="clickMuen(subItem)"  :index="subItem.path">{{subItem.label}}</el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>

<script>
import Cookie from 'js-cookie'
export default {
  data() {
    return {
      // menuData: [
      //   {
      //     path: "/",
      //     name: "home",
      //     label: "首页",
      //     icon: "s-home",
      //     url: "/Home/Home",
      //   },
      //   {
      //     path: "/mall",
      //     name: "mall",
      //     label: "商品管理",
      //     icon: "video-play",
      //     url: "/MallManage/MallManage",
      //   },
      //   {
      //     path: "/user",
      //     name: "user",
      //     label: "用户管理",
      //     icon: "user",
      //     url: "/UserManage/UserMange",
      //   },
      //   {
      //     label: "其他",
      //     icon: "location",
      //     children: [
      //       {
      //         path: "/page1",
      //         name: "page1",
      //         label: "页面1",
      //         icon: "setting",
      //         url: "/Other/PageOne",
      //       },
      //       {
      //         path: "/page2",
      //         name: "page2",
      //         label: "页面2",
      //         icon: "setting",
      //         url: "/Other/PageTwo",
      //       },
      //     ],
      //   },
      // ],
    };
  }, 
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    //点击跳转
    clickMuen(item){
      console.log(item)
      //当前页面的路由与跳转的路由一致才允许跳转
      if(this.$route.path !== item.path && !(this.$route.path === '/home' && (item.path === '/'))){
        this.$router.push(item.path)
      }    
      this.$store.commit('selectMenu',item) 
    }
  },
  computed:{
    // 没有子菜单
    noChildren(){
        return this.menuData.filter(item => !item.children) 
    }, 
    
    //有子菜单
    hasChildren(){
      return this.menuData.filter(item => item.children) 
    },
    menuData(){
      return JSON.parse ( Cookie.get('menu')) || this.$store.state.tab.menu
    },

    isCollapse(){
      return this.$store.state.tab.isCollapse 
    }
  }
};
</script>

<style lang='less' scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu{
  height: 100vh;
  border-right: 0;
  h3{
    color:#fff;
    font-size: 16px;
    font-weight: 400;
    line-height:48px;
    text-align:center;
  }
}
</style>
